Lewisville Dam
Key Takeaway
Lewisville Dam is classified as high hazard in Texas. It was completed in 1955 and is 71 years old. Its primary use is flood risk reduction. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.
Physical Details
| Dam Height | 130 ft (taller than 99.6% in TX) |
| Dam Length | 32,328 ft |
| Dam Type | Earth |
| Max Storage | 1.8M acre-ft |
| Normal Storage | 618.4K acre-ft |
| Surface Area | 23,280 acres |
| Drainage Area | 1,660 sq mi |
| Max Discharge | 216,800 cfs |
| Year Completed | 1955 (71 years old) |
| NID ID | TX00008 |
Safety Information
Loss of human life is likely if the dam fails.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
USACE - Fort Worth District
Federal Government
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What is the hazard classification of Lewisville Dam?
Lewisville Dam is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Lewisville Dam?
Lewisville Dam is owned by USACE - Fort Worth District (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lewisville Dam built?
Lewisville Dam was completed in 1955, making it 71 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.
What is the primary purpose of Lewisville Dam?
Lewisville Dam serves the following purposes: Flood Risk Reduction, Fish And Wildlife Pond, Recreation, Hydroelectric, Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Lewisville Dam?
Lewisville Dam has a dam height of 130 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.
When was Lewisville Dam last inspected?
Lewisville Dam was last inspected on February 28, 2024. Inspection dates indicate when a formal review occurred, not the results of that inspection.